Window-sash ventilator.



No. 700,935. Patented May 27,1902.

J. JACOBS.

WINDUW SASH VENTILA (Applicazion'med Jan. 15, 19o

(No Model.)

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JCI^INJACCBS, CF CHICAGO, ILLINOIS.

WINDOW-SASH VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 700,935, dated May 27, 1902.

Y Application flied January 15, 190,2. sain No. 89,799. (No model.)

To all whom, t 71mg/ concern:

Be it known that I, JOHN JACOBS, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Window-Sash Ventilators; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to an improved Window-sash ventilatorintended for insertion in a suitable opening in the sash; and the invention consists in the matters hereinafter set forth, and more particularly pointed out in the appended claims. p

In the drawings, Figure l is a plan View of the lower corner of a window-sash, showing my improved ventilator applied thereto. Fig. 2 is a transverse section taken on line 2 2 of Fig. l. Fig. 3 is an outer end View of the device. Fig. et is a section similar to Fig. 2, illustrating a modification.

As shown in said drawings, A designates one of the stiles, and B the bottom rail, of a windowsash, and C, Fig. l, designates as a whole my improved ventilator applied to the stile of the sash.

The construction of the ventilator is more clearly shown in Figs. 2 and 3. As shown in said figures, the stile of the sash is provided with a through transverse opening ci, and within said opening is located a diaphragm or plate D, which is disposed in a plane perpendicular to the axis of the opening and eX- tends entirely across the opening. Said plate is provided with a plurality of openings d, which are herein shown as made circular and disposed concentrically about the axis of the plate. E designates a rotative circular-plate,

which is located between the diaphragm D.

and the inner end of the opening a and is provided with a plurality of openings e, corresponding in shape and location to the openings (Z of the diaphragm. Said plate E is provided with a short central shaft E', fixed rigidly to the plate E, and said shaft extends through a central orifice of the diaphragm D and has rotative bearing in said diaphragm. Said shaft E' is provided at its inner end with a turning-knob e', by which the plate E may be rotated with respect to the diaphragm, whereby the apertures in said rotative plate lmay be moved into and out of register With the apertures in said diaphragm. Said apertured plates D and E thus constitute means by which a current of air passing through the opening in the sash may be cut off partially or entirely or allowed to pass therethrough in the full capacity of the registering openings in the plates. Said rotative plate and diaphragm are shown as contained Within a short tube-section F, which is inserted within the opening in the window-sash. The diaphragm D is affixed in any suitable manner at its margin to the tube, as by soldering, so as to be permanently secured therein. Said tube is preferably provided on its inner end with an annular flange f, by which the tube is secured to the sash, as by screws or the like, and said iange is preferably set into vthe sash flush with the face thereof.

Located outside of and above the opening in the sash and projecting from said sash is an inclined overhanging shield Gr. Said shield is provided to prevent `snow or rain entering said opening and passing therethrough into the room. As herein shown, the shield G is made an integral part of the tube F, the metal of the tube prior to its formation into the tube being cut to provide an extension which when the tube is formed is bent down- Wardly into the position shown in Fig. 2. The shield G may be made, however, an independent or separate part and attached to the outer face of the sash above said opening in any suitable manner.

Said ventilator, while being shown as lorcatedin, the stile of the window-sash, may be located in the rail thereof, if-desired, and

more than one ventilator may be located in each sash. Furthermore, in practice one or more of said ventilators will be located in the lower sash and one or more in the upper sash thereof, so'as to permit free ingress and egress of the cold and Warm air to and fromfthe room.

Among the advantages of the construction lherein shown may be noted the `fact that said ventilator can be readily applied to a window-sash and when applied does not :mar or detract from the appearance of the sash. Furthermore, there are no projecting parts on ICO the inner side of the sash which are likely to become entangled with adjacent articles, such as a window-curtain, which would be likely to tear or otherwise injure the curtain. Furthermore, said ventilator provides ample ventilation in a room without danger of creating objectionable drafts therein. During extremely cold weather it is desirable that a room be thoroughly ventilated, and if it be necessary to raise the window-sash for this purpose the introduction of cold air to the room is too great and vthere is liability of objectionable and injurious drafts. vice means are provided for ample ventilation and at the same time the supply of air to the room is so small that such drafts will not be produced. The device is, moreover, very economical in its construction and can be applied to the window at a small cost, and being made of few parts is very durable.

In the construction shown in Fig. 4 the diaphragm D and rotative plate E are attached to a shorttube'H, which extends but a little distance in the opening ot the sash. Located between said tube H and the outer end of the opening is a tube I, which is provided with an inwardly-tapering or contracted end I', having a central opening t'. Said tapered tube prevents water or snow passing through said opening into the room, and also by reason of its form and location relatively to the diaphragm acts to break up the currents of air passing through the opening. A shield or hood .I is attached to the outer face of the sash over said opening and acts, in the m-anner of the shield G, to prevent the tube I becoming filled with snow. In some instances vthe outside shields may be omitted.

I claim as my inventionl. A window-sash ventilator comprising a tube adapted to extend through an opening in the sash member, and made of a length approximately equal to the width of the sash member, a diaphragm extending across the bore of the tube at the inner end thereof, a damper-plate engaging the diaphragm, a shaf t aliixed to the damper-plate and having rotative engagement with said diaphragm and formed at its inner end to provide an operating knob or handle,'said diaphragm and plate being provided with registering apertures which are adapted' to be brought into and out of register by rotation of said plate, and a shield or hood projecting outwardly over the outer end of said tube.

2. A window-sash ventilator comprising a tube adapted to extend through an opening in the sash member, and made of alength approximately equal to the width of the sash member, a diaphragm extending across the bore of the tube at the inner end thereof, a rotative damper plate engaging the diaphragm, said diaphragm and plate being provided with registering apertures which are adapted to be brought into and out* of register by rotation of said damper-plate and a shield or hood made integral with the upper margin of said tube and extending outwardly therefrom.

3. A Window-sash ventilator comprising a tube adapted to extend through an opening in the window-sash, and made of a length approximately equal to the width of the sash member, a diaphragm contained within the tube and extending across the bore thereof, a rotative damper plate engaging the diaphragm, the diaphragm and dampenplate being provided with registering apertures which are adapted to be brought into and out of register by rotation of said damper-plate, and an operating knob or handle connected with said damper plate and contained entirely within the bore of the tube.

4. The combination with a window-sash provided with a through-opening, of a ventilator comprising adiaphragm which extends across said opening, a movable plate engaging said diaphragm, said plate and diaphragm being provided with apertures which are adapted to be brought into and out of register by movement of said plate, and a contracted funnel-shaped casing located between said diaphragm and the outer end of said opening.

5. The combination with a window sash provided with a through-opening, of a ventilator comprising a diaphragm which extends across said opening, a movable plate engaging said diaphragm, said plate and diaphragm being provided with apertures which are adapted to be brought into and out of register by movement of said plate, a contracted funnelshaped casing located between said diaphragm and the outer end of said opening, and a shield or hood projecting from the outer face of said sash over said opening.

.In testimony that I claim the foregoing as my invention I affix my signature, in presence of two witnesses, this 10th day of .Iannary, A. D. 1902.

JOHN JAooBs.

Witnesses:

GERTRUDE BRYcE, W. L. HALL.

IOC 

